@article{DE_1983_19_3_a8, author = {P. A. Mishnaevskii}, title = {Investigation of a second-order elliptic operator in domains with an infinite boundary by means of the operator {Sturm--Liouville} {equation.~I}}, journal = {Differencialʹnye uravneni\^a}, pages = {445--457}, publisher = {mathdoc}, volume = {19}, number = {3}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1983_19_3_a8/} }